Hill’s Science Plan – Adult 1-6 with Chicken is a dry formula for adult cats aged 1–6, designed to support daily maintenance with balanced protein, fat, and minerals.

The first ingredient is chicken and turkey meal, listed at 26% with chicken at 16%, supplying concentrated animal protein to help maintain lean muscle and overall body strength.

At 31.9% crude protein and 19.7% fat, the diet delivers the amino acids and energy adult cats need, helping sustain activity levels and healthy body condition when portioned appropriately.

Carbohydrates at 37.5% come mainly from wheat, maize, and broken rice, providing readily available energy but also increasing overall starch content.

Fish oil contributes long-chain omega-3s, and the declared omega-3 (0.42%) and omega-6 (3.04%) levels support skin and coat health and a balanced inflammatory response.

Calcium at 0.75% and phosphorus at 0.74% work together to support bone and dental health in adult cats.

Magnesium at 0.082% and sodium at 0.42% reflect a controlled mineral profile that supports urinary tract health and normal fluid balance.

Dried beet pulp provides fermentable fiber to nourish beneficial gut bacteria and promote regular stools despite a low crude fiber level (1.4%).

Antioxidant support includes vitamin E (722 IU/kg), vitamin C (115 ppm), and beta-carotene (2.84 ppm), which help protect cells from oxidative stress.

Taurine at 0.19% supports normal heart function and vision, a non-negotiable requirement for feline health.

Pros:

• Concentrated animal protein: Chicken and turkey meal (26%, with chicken at 16%) provide highly digestible, muscle-supporting amino acids for adult maintenance.

• Defined fatty acid profile: Omega-6 at 3.04% and omega-3 at 0.42%, aided by fish oil, support skin and coat quality and help maintain a healthy inflammatory balance.

• Bone and urinary support: Calcium at 0.75%, phosphorus at 0.74%, and magnesium at 0.082% offer a controlled mineral balance for skeletal health and urinary tract support.

• Antioxidant fortification: Vitamin E (722 IU/kg), vitamin C (115 ppm), and beta-carotene (2.84 ppm) help protect tissues from oxidative stress and support immune function.

• Essential taurine: Taurine at 0.19% supports normal cardiac function and retinal health, critical for all cats.

• Electrolyte balance: Potassium at 0.8% and sodium at 0.42% help maintain proper hydration status, nerve signaling, and muscle function.

Cons:

• Higher starch load: At 37.5% carbohydrates from wheat, maize, and rice, the diet may not suit cats whose owners prefer lower-carbohydrate feeding.

• Plant protein inclusion: Maize protein meal contributes plant-derived amino acids, which may dilute the proportion of animal-based protein for owners seeking exclusively animal protein sources.

• Limited fiber: Crude fiber at 1.4% offers minimal support for hairball control or enhanced satiety in some cats.

• Very low moisture: With 4% moisture, typical of dry kibble, cats rely on drinking water to meet hydration needs, which is important for urinary health.

• Unspecified palatant: “Digest” enhances flavor but does not specify the animal source, which may be a concern for cats with known protein sensitivities.

• Energy-dense fat level: At 19.7% crude fat, portion control may be necessary for less active or indoor cats to prevent unwanted weight gain.